Pulverizer beater



1 1927. March J. H. JONES PULVERIZER BEATER Fi-led May 31, 1922 Patented Mar. 15 1927.

TENT FFICE.

JACOB H. JONES, OF HARBORCREEK, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MEN'IS, TO ERIE CITY IRON VTORKS, A CORPORATION OF PENNSYLVANIA.

PULVERIZER BEATEB.

Application filed May 31,

In the use of pulverizers, particularly pulverizers used for pulverizing coal in direct connection with a furnace beater blades are mounted on a carrier. These are subjected to very severe wear and consequently have to be renewed. The wear on the different parts of the blade is not uniform but varies quite materially. lVith the present invention the blades are sectional and the badly in worn section may be removed and renewed without renewing the whole blade, thus effecting very material economy. Qn the other hand it is very necessary that these blades be securely anchored so as to hold them under the strain to which they are subjected and as against centrifugal force due to the high velocity of the beater.

The invention is illustrated in the accompanying drawings as follows Fig. 1 shows a section on the line l-l in Fig. 2.

'Fig. 2 an end view of the beater, partly in section.

Fig. 3 a plan view of one of the blades.

Fig. 4 a side elevation of the blades.

1 marks the shaft on which the beater is mounted, and 2 a drum carried by'the shaft, the drum having a hub 3, the flanges 4- at the ends and a conical wall 5.

Undercut grooves 6 are arranged axially in the outer periphery of the drum and beater blades 7 are provided with the bases 8 having the extensions 9 which engage the undercut portions of the'walls of the grooves 35 so as to securely lock the blades in the 1922. Serial No. 565,009.

grooves against displacement or radial movement. Shoulders 10 are arranged at the ends of the grooves thus locking the blades against movement in one direction and removable plates 11 engage the opposite ends of the blades, the plates 11 being secured by screws 12. The blades are made up of the end sections 15 and 17 and the central sections 16, the section 17 having a projection 13 and the section 15 a projection 14:- With this construction by removing the retaining plate 11 the sections may be removed and any worn sections replaced and any sections as are to be re-used replaced with them, thus, as before stated resulting in. a very great saving in the operation of the device. The undercut groove scheme of fastening the blades permits of this sectional construction of the blades thoroughly securing all sections with the simple locking scheme 5 shown. I

What I claim as new is In a pulverizer beater, the combination of a drum having axially extending undercut grooves with a shoulder at the end of each; and sectional blades, the sections having: bases engaging portions of the undercut walls of the grooves and being adapted to be slid endwise into the grooves said shoulders being adapted for locking the blades in the grooves.

In testimony whereof I have hereunto set my hand.

JACOB H. JONES. 

